1) 0.5 ml of 1 M NaOH was added to 0.5L of a 100mM buffer solution...
1) 0.5 ml of 1 M NaOH was added to 0.5L of a 100mM buffer
solution at pH=7.0. Calculate
how the pH value is affected by this addition if a pKa value of the
buffer is 7.47.
b) 1ml of 0.01mM HCl is added to 10L of pure water. What is a pH of this solution?
Homework Answers
Add Answer to:
1) 0.5 ml of 1 M NaOH was added to 0.5L of a 100mM buffer
solution...
REPOSTING: observing pH changes in Water and Buffer solutions. the amount added of HCl and NaOH...
REPOSTING: observing pH changes in Water and Buffer
solutions.
the amount added of HCl and NaOH are both 25mL.
the buffer solution is made of 2grams of NaC2H3O2 and
4 mL of 6M HC2H3O2 in a 50 mL solution (46mL of water). the
solution will contain 2.4x10^-2 mol each of NaC2H3O2 a d
HC2H3O2.
question:
how to answer it (I'm not sure I'm doing it right and
want an expert to double check):
I need help calculating the theoretical and...
1) How would you make 300 ml of a 0.1 M sodium phosphate buffer, pH 7.0...
1) How would you make 300 ml of a 0.1 M sodium phosphate buffer, pH 7.0 (pKa = 7.2) phosphate dibasic (the conjugate base). 2) What are the concentrations of acetate and acetic acid in a 0.2 M acetate buffer pH 5.3? The pKa for acetic acid is 4.76. 3)You have 100 ml of 0.1 M acetate buffer pH 5.2 (pKa 4.76). You add 10 ml of 0.1 M NaOH. Calculate the resulting change in pH and the buffering capacity...
Calculate the following: a. The pH of a 500.0 mL buffer solution containing 0.75 M HCN...
Calculate the following: a. The pH of a 500.0 mL buffer solution containing 0.75 M HCN (Ka = 6.2 x 10^-10) and 0.55 M NaCN b. The pH of the above buffer after the addition of 100.0 mL of 1.0 M NaOH. c. The pH of the buffer if 100.0 mL of 1.0 M HCl was added to the solution in part a.
9. 15.00 mL of 0.100 M NaOH are added to 50.00 mL of a buffer solution...
9. 15.00 mL of 0.100 M NaOH are added to 50.00 mL of a buffer solution containing 1.0 mmol CH3COOH and 1.0 mmol CH3C00-. What is the new solution pH? (a) 11.89 (b) 2.11 (c) 7.87 (d) Can't tell / need more info. 10. The equilibrium constant for the below reaction is 4.2 x 10 Which of the following statements is FALSE? CuBr (s) = Cu+ (aq) + Br- (aq) (a) CuBr has poor solubility in water. (b) If 15.0...
A volume of 500.0 mL of 0.160 M NaOH is added to 575 mL of 0.200...
A volume of 500.0 mL of 0.160 M NaOH is added to 575 mL of 0.200 M weak acid (K, the resulting buffer? 5.93 x 10). What is the pH of HA (aq) +OH (aq)HO) + A (aq) pH = QuestronT orA Calculate the pH of the resulting solution if 35.0 mL of 0.350 M HCl(aq) is added to 45.0 mL of 0.350 M NaOH(aq). pH Calculate the pH of the resulting solution if 35.0 mL of 0.350 M HCI(aq)...
.65 mL of .24M NaOH are added to 21.6 mL of buffer calculate pH of buffer...
.65 mL of .24M NaOH are added to 21.6 mL of buffer calculate pH of buffer prior to base addition, after and pH change. what if instead of buffer it is 21.6 mL of distilled water. ph before, after and the change. 3 sig figs. buffer was made from .196M HCHOO .271M NaCHOO. with a given ph of 4.4
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of...
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of 0.2 M acetic acid to make a buffer of pH 5.5? (refer to Table 2-2 on page 60 for pKa values). What is the molarity of the resulting buffer with respect to acetate (acetate + acetic acid)? 7. How many mL of 0.2 M HCl should be added to 50 mL of 0.2 M Tris base (Trishydroxymethyl aminomethane) to make a buffer of pH...
(1). 500.0 mL of 0.110 M NaOH is added to 535 mL of 0.250 M weak...
(1). 500.0 mL of 0.110 M NaOH is added to 535 mL of 0.250 M weak acid (Ka = 6.08 × 10-5). What is the pH of the resulting buffer? HA(aq) + OH-(aq) = H2O(l) + A- (aq) (2). A 25.863 g sample of aqueous waste leaving a fertilizer )manufacturer contains ammonia. The sample is diluted with 74.612 g of water. A 14.159 g aliquot of this solution is then titrated with 0.1059 M HCl. It required 31.31 mL of...
2. What is the pH of buffer when 0.01 mol of NaOH is added to the...
2. What is the pH of buffer when 0.01 mol of NaOH is added to the 0.5L of ammonium buffer consisting of 0.3 M NH3 and 0.2 M NH4CI? (pKa of ammonia is 9.25.)
a buffer solution consisting of 30ml of 1.0M HC2H3O2 + 30 ml 1.0M NaC2H3O2. 1. Write...
a buffer solution consisting of 30ml of 1.0M HC2H3O2 + 30 ml 1.0M NaC2H3O2. 1. Write the chemical equation for buffer solution 2. Calculate ph of buffer solution and account for dilution 3. Calculate ph for buffer solution with addition of 2mL of 1.0 M HCL and account for dilution. 4. Calculate pH for buffer solution with added 2mL of 1.0 M NaOH And account for dilution. The Ka of HC2H3O2 is 1.8 x 10^-5
REPOSTING: observing pH changes in Water and Buffer
solutions.
the amount added of HCl and NaOH are both 25mL.
the buffer solution is made of 2grams of NaC2H3O2 and
4 mL of 6M HC2H3O2 in a 50 mL solution (46mL of water). the
solution will contain 2.4x10^-2 mol each of NaC2H3O2 a d
HC2H3O2.
question:
how to answer it (I'm not sure I'm doing it right and
want an expert to double check):
I need help calculating the theoretical and...
9. 15.00 mL of 0.100 M NaOH are added to 50.00 mL of a buffer solution containing 1.0 mmol CH3COOH and 1.0 mmol CH3C00-. What is the new solution pH? (a) 11.89 (b) 2.11 (c) 7.87 (d) Can't tell / need more info. 10. The equilibrium constant for the below reaction is 4.2 x 10 Which of the following statements is FALSE? CuBr (s) = Cu+ (aq) + Br- (aq) (a) CuBr has poor solubility in water. (b) If 15.0...
A volume of 500.0 mL of 0.160 M NaOH is added to 575 mL of 0.200 M weak acid (K, the resulting buffer? 5.93 x 10). What is the pH of HA (aq) +OH (aq)HO) + A (aq) pH = QuestronT orA Calculate the pH of the resulting solution if 35.0 mL of 0.350 M HCl(aq) is added to 45.0 mL of 0.350 M NaOH(aq). pH Calculate the pH of the resulting solution if 35.0 mL of 0.350 M HCI(aq)...
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of 0.2 M acetic acid to make a buffer of pH 5.5? (refer to Table 2-2 on page 60 for pKa values). What is the molarity of the resulting buffer with respect to acetate (acetate + acetic acid)? 7. How many mL of 0.2 M HCl should be added to 50 mL of 0.2 M Tris base (Trishydroxymethyl aminomethane) to make a buffer of pH...
2. What is the pH of buffer when 0.01 mol of NaOH is added to the 0.5L of ammonium buffer consisting of 0.3 M NH3 and 0.2 M NH4CI? (pKa of ammonia is 9.25.)
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